The word disputatiously is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 23
Highest Scoring Words With Friends™ Plays In The Letters disputatiously
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Seven Letter Word Alert: (52 words)
altoist, aulists, autists, autopsy, dialups, diptail, display, distils, dualist, duality, dustily, dustups, idolist, layouts, lutists, outlast, outlays, outpity, outplay, outputs, outsail, outsits, outstay, passout, payouts, piously, pisoids, pistils, pistols, plastid, plaudit, postils, slipout, soapily, spotlit, spousal, stipula, stoutly, studios, stupids, stylist, styloid, stylops, taoists, tastily, tipsily, topsail, tylosis, typists, uploads, utility, utopias